1. Department for Human Genetics and Hussman Institute for Human Genomics; University of Miami; Miami FL
2. Department of Comparative Biosciences and Waisman Center; University of Wisconsin; Madison WI
3. Medical Research Council Centre for Neuromuscular Diseases; University College London Institute of Neurology; London United Kingdom
4. Data Management and Coordinating Center, Rare Diseases Clinical Research Network, Pediatrics Epidemiology Center; University of South Florida; Tampa FL
5. Department of Neurology; University of Iowa; Iowa City IA
6. Department of Neurology; Academic Medical Center; Amsterdam the Netherlands
7. Department of Neurology; University of Miami; Miami FL
8. Department of Neurology; University of Rochester; Rochester NY
9. Department of Neurology; Stanford University; Palo Alto CA
10. Department of Neurology; Johns Hopkins University School of Medicine; Baltimore MD
11. Department of Neuroscience; Johns Hopkins University School of Medicine; Baltimore MD
12. Department of Neurology; Wayne State University School of Medicine; Detroit MI
13. Division of Neurology; Children's Hospital of Philadelphia; Philadelphia PA
14. Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS); Foundation Carlo Besta Neurological Institute; Milan Italy
15. Department of Clinical Genetics; Leiden University Medical Center; Leiden the Netherlands
16. Department of Neurology, Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul South Korea
17. Department of Neurology, Perelman School of Medicine; University of Pennsylvania; Philadelphia PA